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* lisp/org-macs.el (org-require-package): New macro trying to load a library and displaying custom error message or warning on failure. The actual package (not library) name can be provided as optional argument. * lisp/ob-R.el (org-babel-R-initiate-session): * lisp/ob-clojure.el (ob-clojure-eval-with-inf-clojure): (ob-clojure-eval-with-cider): (ob-clojure-eval-with-slime): * lisp/ob-forth.el (org-babel-forth-session-execute): * lisp/ob-gnuplot.el (org-babel-execute:gnuplot): (org-babel-gnuplot-initiate-session): * lisp/ob-haskell.el (org-babel-interpret-haskell): (org-babel-haskell-initiate-session): * lisp/ob-js.el (org-babel-execute:js): (org-babel-js-initiate-session): * lisp/ob-julia.el (org-babel-julia-initiate-session): * lisp/ob-lisp.el (org-babel-execute:lisp): * lisp/ob-ocaml.el (org-babel-prep-session:ocaml): * lisp/ob-octave.el (org-babel-octave-initiate-session): * lisp/ob-processing.el (org-babel-processing-view-sketch): * lisp/ob-ruby.el (org-babel-execute:ruby): (org-babel-ruby-initiate-session): * lisp/ol-bbdb.el (org-bbdb-open): (org-bbdb-complete-link): (org-bbdb-anniv-export-ical): * lisp/org-agenda.el: * lisp/org-plot.el (org-plot/gnuplot): * lisp/org.el: * lisp/ox-ascii.el (org-ascii-table): * lisp/ox-html.el (org-html-htmlize-generate-css): * lisp/ox-org.el: Use the new macro. * lisp/oc-csl.el: Add FIXME. oc-csl uses a custom function doing similar job. * lisp/ob-js.el (org-babel-js-initiate-session): Add FIXME noting that the third-party package is outdated.
286 lines
11 KiB
EmacsLisp
286 lines
11 KiB
EmacsLisp
;;; ob-haskell.el --- Babel Functions for Haskell -*- lexical-binding: t; -*-
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;; Copyright (C) 2009-2023 Free Software Foundation, Inc.
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;; Author: Eric Schulte
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;; Maintainer: Lawrence Bottorff <borgauf@gmail.com>
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;; Keywords: literate programming, reproducible research
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;; URL: https://orgmode.org
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Org Babel support for evaluating Haskell source code.
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;; Haskell programs must be compiled before
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;; they can be run, but haskell code can also be run through an
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;; interactive interpreter.
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;;
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;; By default we evaluate using the Haskell interpreter.
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;; To use the compiler, specify :compile yes in the header.
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;;; Requirements:
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;; - haskell-mode: https://www.iro.umontreal.ca/~monnier/elisp/#haskell-mode
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;; - inf-haskell: https://www.iro.umontreal.ca/~monnier/elisp/#haskell-mode
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;; - (optionally) lhs2tex: https://people.cs.uu.nl/andres/lhs2tex/
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;;; Code:
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(require 'org-macs)
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(org-assert-version)
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(require 'ob)
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(require 'org-macs)
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(require 'comint)
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(declare-function haskell-mode "ext:haskell-mode" ())
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(declare-function run-haskell "ext:inf-haskell" (&optional arg))
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(declare-function inferior-haskell-load-file
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"ext:inf-haskell" (&optional reload))
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(declare-function org-entry-get "org" (pom property &optional inherit literal-nil))
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(defvar org-babel-tangle-lang-exts)
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(add-to-list 'org-babel-tangle-lang-exts '("haskell" . "hs"))
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(defvar org-babel-default-header-args:haskell
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'((:padlines . "no")))
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(defvar org-babel-haskell-lhs2tex-command "lhs2tex")
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(defvar org-babel-haskell-eoe "\"org-babel-haskell-eoe\"")
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(defvar haskell-prompt-regexp)
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(defcustom org-babel-haskell-compiler "ghc"
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"Command used to compile a Haskell source code file into an executable.
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May be either a command in the path, like \"ghc\" or an absolute
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path name, like \"/usr/local/bin/ghc\". The command can include
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a parameter, such as \"ghc -v\"."
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:group 'org-babel
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:package-version '(Org "9.4")
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:type 'string)
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(defconst org-babel-header-args:haskell '((compile . :any))
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"Haskell-specific header arguments.")
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(defun org-babel-haskell-execute (body params)
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"This function should only be called by `org-babel-execute:haskell'."
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(let* ((tmp-src-file (org-babel-temp-file "Haskell-src-" ".hs"))
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(tmp-bin-file
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(org-babel-process-file-name
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(org-babel-temp-file "Haskell-bin-" org-babel-exeext)))
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(cmdline (cdr (assq :cmdline params)))
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(cmdline (if cmdline (concat " " cmdline) ""))
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(flags (cdr (assq :flags params)))
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(flags (mapconcat #'identity
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(if (listp flags)
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flags
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(list flags))
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" "))
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(libs (org-babel-read
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(or (cdr (assq :libs params))
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(org-entry-get nil "libs" t))
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nil))
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(libs (mapconcat #'identity
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(if (listp libs) libs (list libs))
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" ")))
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(with-temp-file tmp-src-file (insert body))
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(org-babel-eval
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(format "%s -o %s %s %s %s"
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org-babel-haskell-compiler
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tmp-bin-file
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flags
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(org-babel-process-file-name tmp-src-file)
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libs)
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"")
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(let ((results (org-babel-eval (concat tmp-bin-file cmdline) "")))
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(when results
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(setq results (org-trim (org-remove-indentation results)))
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(org-babel-reassemble-table
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(org-babel-result-cond (cdr (assq :result-params params))
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(org-babel-read results t)
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(let ((tmp-file (org-babel-temp-file "Haskell-")))
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(with-temp-file tmp-file (insert results))
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(org-babel-import-elisp-from-file tmp-file)))
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(org-babel-pick-name
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(cdr (assq :colname-names params)) (cdr (assq :colnames params)))
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(org-babel-pick-name
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(cdr (assq :rowname-names params)) (cdr (assq :rownames params))))))))
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(defun org-babel-interpret-haskell (body params)
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(org-require-package 'inf-haskell "haskell-mode")
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(add-hook 'inferior-haskell-hook
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(lambda ()
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(setq-local comint-prompt-regexp
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(concat haskell-prompt-regexp "\\|^λ?> "))))
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(let* ((session (cdr (assq :session params)))
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(result-type (cdr (assq :result-type params)))
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(full-body (org-babel-expand-body:generic
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body params
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(org-babel-variable-assignments:haskell params)))
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(session (org-babel-haskell-initiate-session session params))
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(comint-preoutput-filter-functions
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(cons 'ansi-color-filter-apply comint-preoutput-filter-functions))
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(raw (org-babel-comint-with-output
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(session org-babel-haskell-eoe nil full-body)
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(insert (org-trim full-body))
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(comint-send-input nil t)
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(insert org-babel-haskell-eoe)
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(comint-send-input nil t)))
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(results (mapcar #'org-strip-quotes
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(cdr (member org-babel-haskell-eoe
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(reverse (mapcar #'org-trim raw)))))))
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(org-babel-reassemble-table
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(let ((result
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(pcase result-type
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(`output (mapconcat #'identity (reverse results) "\n"))
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(`value (car results)))))
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(org-babel-result-cond (cdr (assq :result-params params))
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result (when result (org-babel-script-escape result))))
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(org-babel-pick-name (cdr (assq :colname-names params))
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(cdr (assq :colname-names params)))
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(org-babel-pick-name (cdr (assq :rowname-names params))
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(cdr (assq :rowname-names params))))))
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(defun org-babel-execute:haskell (body params)
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"Execute a block of Haskell code."
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(let ((compile (string= "yes" (cdr (assq :compile params)))))
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(if (not compile)
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(org-babel-interpret-haskell body params)
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(org-babel-haskell-execute body params))))
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(defun org-babel-haskell-initiate-session (&optional _session _params)
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"Initiate a haskell session.
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If there is not a current inferior-process-buffer in SESSION
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then create one. Return the initialized session."
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(org-require-package 'inf-haskell "haskell-mode")
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(or (get-buffer "*haskell*")
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(save-window-excursion (run-haskell) (sleep-for 0.25) (current-buffer))))
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(defun org-babel-load-session:haskell (session body params)
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"Load BODY into SESSION."
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(save-window-excursion
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(let* ((buffer (org-babel-prep-session:haskell session params))
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(load-file (concat (org-babel-temp-file "haskell-load-") ".hs")))
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(with-temp-buffer
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(insert body) (write-file load-file)
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(haskell-mode) (inferior-haskell-load-file))
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buffer)))
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(defun org-babel-prep-session:haskell (session params)
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"Prepare SESSION according to the header arguments in PARAMS."
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(save-window-excursion
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(let ((buffer (org-babel-haskell-initiate-session session)))
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(org-babel-comint-in-buffer buffer
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(mapc (lambda (line)
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(insert line)
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(comint-send-input nil t))
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(org-babel-variable-assignments:haskell params)))
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(current-buffer))))
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(defun org-babel-variable-assignments:haskell (params)
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"Return list of haskell statements assigning the block's variables."
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(mapcar (lambda (pair)
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(format "let %s = %s"
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(car pair)
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(org-babel-haskell-var-to-haskell (cdr pair))))
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(org-babel--get-vars params)))
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(defun org-babel-haskell-var-to-haskell (var)
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"Convert an elisp value VAR into a haskell variable.
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The elisp VAR is converted to a string of haskell source code
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specifying a variable of the same value."
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(if (listp var)
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(concat "[" (mapconcat #'org-babel-haskell-var-to-haskell var ", ") "]")
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(format "%S" var)))
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(defvar org-export-copy-to-kill-ring)
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(declare-function org-export-to-file "ox"
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(backend file
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&optional async subtreep visible-only body-only
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ext-plist post-process))
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(defun org-babel-haskell-export-to-lhs (&optional arg)
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"Export to a .lhs file with all haskell code blocks escaped.
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When called with a prefix argument the resulting
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.lhs file will be exported to a .tex file. This function will
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create two new files, base-name.lhs and base-name.tex where
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base-name is the name of the current Org file.
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Note that all standard Babel literate programming
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constructs (header arguments, no-web syntax etc...) are ignored."
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(interactive "P")
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(let* ((contents (buffer-string))
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(haskell-regexp
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(concat "^\\([ \t]*\\)#\\+begin_src[ \t]haskell*\\(.*\\)[\r\n]"
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"\\([^\000]*?\\)[\r\n][ \t]*#\\+end_src.*"))
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(base-name (file-name-sans-extension (buffer-file-name)))
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(tmp-file (org-babel-temp-file "haskell-"))
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(tmp-org-file (concat tmp-file ".org"))
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(tmp-tex-file (concat tmp-file ".tex"))
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(lhs-file (concat base-name ".lhs"))
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(tex-file (concat base-name ".tex"))
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(command (concat org-babel-haskell-lhs2tex-command
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" " (org-babel-process-file-name lhs-file)
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" > " (org-babel-process-file-name tex-file)))
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(preserve-indentp org-src-preserve-indentation)
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indentation)
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;; escape haskell source-code blocks
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(with-temp-file tmp-org-file
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(insert contents)
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(goto-char (point-min))
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(while (re-search-forward haskell-regexp nil t)
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(save-match-data (setq indentation (length (match-string 1))))
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(replace-match (save-match-data
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(concat
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"#+begin_export latex\n\\begin{code}\n"
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(if (or preserve-indentp
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(string-match "-i" (match-string 2)))
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(match-string 3)
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(org-remove-indentation (match-string 3)))
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"\n\\end{code}\n#+end_export\n"))
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t t)
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(indent-code-rigidly (match-beginning 0) (match-end 0) indentation)))
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(save-excursion
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;; export to latex w/org and save as .lhs
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(require 'ox-latex)
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(find-file tmp-org-file)
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;; Ensure we do not clutter kill ring with incomplete results.
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(let (org-export-copy-to-kill-ring)
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(org-export-to-file 'latex tmp-tex-file))
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(kill-buffer nil)
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(delete-file tmp-org-file)
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(find-file tmp-tex-file)
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(goto-char (point-min)) (forward-line 2)
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(insert "%include polycode.fmt\n")
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;; ensure all \begin/end{code} statements start at the first column
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(while (re-search-forward "^[ \t]+\\\\begin{code}[^\000]+\\\\end{code}" nil t)
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(replace-match (save-match-data (org-remove-indentation (match-string 0)))
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t t))
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(setq contents (buffer-string))
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(save-buffer) (kill-buffer nil))
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(delete-file tmp-tex-file)
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;; save org exported latex to a .lhs file
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(with-temp-file lhs-file (insert contents))
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(if (not arg)
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(find-file lhs-file)
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;; process .lhs file with lhs2tex
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(message "running %s" command) (shell-command command) (find-file tex-file))))
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(provide 'ob-haskell)
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;;; ob-haskell.el ends here
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